Aerial



March 21, 1939.

A. O. HAUKEDAHL I AERIAL Original Filed Aug. 7, 1936 Attorneys Patented Mar. 21, 1939 UNITED STATES PATENT OFFICE AERIAL Arthur 0. Haukedahl, Mason City, Iowa .Refiled for abandoned application Serial No. 94,868, August 7, 1936. This application April 15, 1938, Serial No. 202,348. Renewed January 2'7, 1939 1 Claim. (01. 250--33) This application is substituted for abandoned of a washer l8 that rests on the upper end l3 application 94,868, filed Aug. 7, 1936. of the tube l2 and a lock pin l9 that extends This invention relates to aerials and particutransversely through a suitable opening in the rod larly to outside radio aerials. I! and seats against the washer l8 as shown 5 An object of the invention is to provide an in Figure l.

aerial which will do away with supporting poles, The upper insulator I6 is provided with a subwith the exception of asingle pole; will eliminate stantially circular series of relatively spaced arthe need of guide wire; and can easily be put up cuate passages or bores 20 terminating at their and removed, and used either as a double or single respective opposite ends in openings 2| that exl0 aerial. tend through the bottom face of the insulator.

It is a secondary objective of this invention to This insulator is constructed in umbrella fashion provide a radio aerial with insulation that will with the skirt hanging down to protect the lower be dry in wet weather and by the construction side of the insulator and keep it dry, also prothereof to improve the dielectric qualities of the tecting the wires.

insulation which over a period of time become The bottom insulator 8 has openings 23 there- 15 lessened by foreign substance lodging on the dithrough arranged to substantially aline with the electric qualities of the insulation. ends 2! of the bores 29. The bottom of this in- The invention together with its objects and adsulator will remain dry at all times due to the vantages will be best understood from a study housing 5 and the top of the insulating having of the following description taken in connection a shedding surface so foreign particles will not 20 with the accompanying drawing wherein: lodge thereon.

Figure 1 is a longitudinal sectional view through The aerial body proper is in the form, in the the aerial. present instance, of a single wire 22 which is Figure 2 is a bottom plan view of the top inthreaded through the passages 20 in insulator I6, 25 sulator, and and through the passages or openings 23 in the Figure 3 is aview showing the bottom insulator insulator 8 in a manner clearly shown in the in top plan with certain parts of the aerial shown drawing and in order to provide a circular series in section. of spaced vertical aerial rods as shown. The Referring to the drawing by reference numerals aerial wire 22 is thus engaged to the base insulator, it will be seen that in the preferred embodiment the turns in the wire being made within the 30 thereof the aerial comprises an attaching membodies of the insulators to the peripheries of the her 5 in the form of a substantial cone having at insulators as clearly suggested. its apex an internally threaded cylindrical port l b appreciated t t b t, a ingle uption 6 adapted to be screwed onto the end of a porting pole or rod will be required for the aerial, Supporting Post Such as for example, roof and the mounting of the aerial will be such as Vent'pipe or Supporting pipe' will dispense with the need of guide wires. It will Further the aer1al comprises a bottom msulator further be appreciated that the aerial may be gggggfi 3 332555; gggig f gi ggg fi fig i easily set up and removed and that it can be used drical part IQ of the attaching member 5. Above as a double or a Single aemal' 40 the threaded section thereof the insulator 8 is It 1S thfmght th clear understandmg P the Substantially conical presenting at the base f constructmn, utility and advantages of an inventhe Come a shoulder H which abuts the end 9 f tion of this character W111 be had without a more the attaching member 5. detailed description.

The insulator 8 is axially bored to receive a Having thus described the invention what is 45 tube 12 in the form of a suitable length of pipe claimed as new is: which has an upper externally threaded section In an aerial, in combination of a supporting l3 onto which is screwed a lock-nut l4 that is post having threaded at one end a substantially a co modated W t a Su t b e e s l5 provided frustro-conical attachment element having at its therefor in the top of the insulator 8. forward end an internally threaded cylindrical Further the aerial Comprises an pp s section adapted to thread onto the threaded end tor it which is suitably secured at one end of of the supporting post and at its largest end an a p p rod n that has a Sliding fit within the internally threaded cylindrical section, an insutube I2 and is secured at the desired adjustment later member having its upper center dropping with respect to the tube l2 through the medium off toward its lower edges, said insulator body 55 sections screw-threaded within the last-named ing through spaced apertures in said rod abutting end of the attaching member, said insulator hava washer disposed on the upper end of the said ing axial bore therein, a tubular member in tubular'end, a second umbrella type insulator said bore serewnreaded at its upper end, a nut supported on one end of said rod, said insulators 5 in the upper end of the said insulator screwrespectively provided with openings therethrough 4 threaded on said tubular member adjustably seand having their respective ends opening through curing said member in said insulator, a rod slidthe surface, an aerial wire extending between said able in said tubular member, means for adjustaloly insulators and threaded through the openings in securing said rod at predetermined axial position the insulators.

10 in said tubular member comprising a pin extend- ARTHUR O. HAUKEDAHL. 11 

